US674213A - Rack-and-pinion mechanism. - Google Patents

Rack-and-pinion mechanism. Download PDF

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Publication number
US674213A
US674213A US1900034333A US674213A US 674213 A US674213 A US 674213A US 1900034333 A US1900034333 A US 1900034333A US 674213 A US674213 A US 674213A
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Prior art keywords
pinion
rack
balls
hub
pinion mechanism
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Edwin Oldfield
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Edwin Oldfield
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16HGEARING
    • F16H55/00Elements with teeth or friction surfaces for conveying motion; Worms; Pulleys; Sheaves
    • F16H55/02Toothed members; Worms
    • F16H55/26Racks
    • F16H55/28Special devices for taking up backlash
    • F16H55/283Special devices for taking up backlash using pressure yokes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00Machine element or mechanism
    • Y10T74/19Gearing
    • Y10T74/19642Directly cooperating gears
    • Y10T74/1967Rack and pinion

Description

No. 674,2I3. Patented May 14, l90l. E. OLDFIELVD.

BACK AND PINION MECHANISM.

(Application filed Oct. 25, 1900.) (No Model.)

WITNESSES [NYE/W03 A 7 B) M M ATTORNEY,

THE scams PETERS cc. PHOTULITMO, wlsmmmuv 0. cv

UNITED STATES PATENT OFFICE.

EDWIN OLDFIELD, OF NORWICH, CONNECTICUT.

RACK-AND-PINICN MECHANISM.

SPECIFICATION forming part of Letters Patent N 0. 674,213, dated May 14, 1901.

Application filed October 25, 1900. Serial No. 34,333 (No model.)

To all whom it may concern:

Be it known that I, EDWIN OLDFIELD, a citizen of the United States, residing at Norwich, New London county, Connecticut, have invented certain new and useful Improvements in Rack-and-Pinion Mechanism, of which the following is a full, clear, and exact description.

This invention relates to rack-and-pinion mechanism, and has for its object the provision, in such mechanism, of devices which shall practically eliminate the element of friction.

Said mechanism, briefly described, consists of a shaft, a circumferentially-grooved collar mounted thereon, a pinion-gear having a hub that surrounds the said collar and is provided with an interior groove, a ring of balls seated in said grooves, and a rack formed with teeth that mesh with the said pinion-teeth and with a lateral extension that bears upon the pinion-hub, the said pinion being formed with a notch leading into the said grooves of such size that the balls must be forced therethrough, as I shall explain hereinafter.

My invention is illustrated in the accompanying drawings, Figures 1 and 2 being, respectively, side and end views of a rack-bar and pinion embodying this invention. Fig. 3 is a central sectional view taken through the pinion, illustrating particularly the mannor in which the balls are supported therein.

Referring to the drawings, the letter a denotes the pinion, and b the said hub or roller. The letter 0 denotes the said cylindrical block, and d the axial supporting pin or stud passing centrally therethrough.

Raceways b c are provided, respectively, in the confronting faces of the hub b and block 0, in which balls 9 are located. To enable the insertion of the balls e, the raceways b are each provided with a notch 0 which cuts nearly into the center of said raceways, the said pinion and hub being preferably of slightly-flexible material, as rawhide, so that it is possible to force the balls through said notches into the raceways, and when thus in place the said balls, while free to travel in their respective raceways, cannot leave the same without being forced therefrom through the said notches.

The reference-letter f denotes the rack-bar, said bar being supported upon the hub b of the pinion a, and the letter f denotes the rackteeth formed on a lateral extension of said bar and adapted to mesh with the pinion-teeth a. When my newly-in vented rack-and-pinion mechanism is in use, the rack f, if of considerable length, may be supported by several of the rollers 12 and in such manner that the weight of the bar is in no way borne by the pinion-teeth, thus doing away with any possibility of the binding or undue wearing of the said teeth. It should also be noted that because of the meshing engagement of said teeth the rollers b will not be revolved simply by frictional contact with the rackbar, but will be caused to revolve in unison with the latter, thus preventing the slipping of the bar on the roller and all possibility of fiat spots being worn upon the rolls, as might result if the latter became stuck or failed to rotate.

The ball-bearing provided for the pinions insures the free rotation of the latter and does away, as nearlyas may be,'with the frictional resistance that would otherwise be present.

Having thus described my invention, I claim 1. In combination, a shaft, a circumferentially-grooved collar mounted thereon, a pinion-gear having an interior groove, a ring of balls seated in said grooves, the said pinion being formed with a not-ch c of such size that the balls must be forced therethrough into the said grooves, as herein specified.

2. In combination, a shaft, a circumferentially-grooved collar mounted thereon, a pinion-gear having a hub of sleeve form that surrounds the said collar and is provided with an interior groove, a ring of balls seated in said grooves, as set forth, and a rack formed with teeth that mesh with the said pinionteeth and with a lateral extension that bears upon the pinion-hub; the said pinion being formed with a notch c of such size that the balls must be forced therethrough into the said grooves, as herein specified.

Signed at Norwich, Connecticut, this 16th day of October, 1900.

EDWIN OLDFIELDQ Witnesses:

FRANK H. ALLEN, ALONZO M. LUTHER.

US674213A 1900-10-25 1900-10-25 Rack-and-pinion mechanism. Expired - Lifetime US674213A (en)

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US674213A US674213A (en) 1900-10-25 1900-10-25 Rack-and-pinion mechanism.

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US674213A US674213A (en) 1900-10-25 1900-10-25 Rack-and-pinion mechanism.

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US674213A true US674213A (en) 1901-05-14

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419487A (en) * 1944-02-02 1947-04-22 Kenyon Instr Co Inc Remote-control metering system
US2485792A (en) * 1947-01-14 1949-10-25 Jaeger Machine Co Gear and rack type control
US2487026A (en) * 1944-11-24 1949-11-01 Dayton Acme Co One-way wedging clutch
US2548603A (en) * 1947-11-28 1951-04-10 Gen Electric Zero backlash gear drive
US3141647A (en) * 1960-08-18 1964-07-21 Hugh L Perazone Valve with remote control actuator
US3400593A (en) * 1966-03-28 1968-09-10 Power Components Inc Parts lifting equipment for die press
US4646868A (en) * 1983-03-22 1987-03-03 Bendiberica S.A. Power assisted steering system with rack and pinion particularly of the type with central output
US5540111A (en) * 1992-08-03 1996-07-30 Franklin E. Barnett Drive apparatus and method
US20050262619A1 (en) * 2004-05-26 2005-12-01 Musal Michael J Head gear fitting system
US20050283885A1 (en) * 2004-06-29 2005-12-29 Stroud David E Helmet reinforcement system
US20070044210A1 (en) * 2005-08-31 2007-03-01 Bell Sports, Inc. Integrated fit and retention system
US20100050324A1 (en) * 2008-09-02 2010-03-04 Bell Sports, Inc. Height-Adjustable Fit System
US8020219B2 (en) 2005-07-01 2011-09-20 Bell Sports, Inc. Strap anchor system and method
US9622550B2 (en) 2013-09-22 2017-04-18 Massachusetts Institute Of Technology Methods and apparatus for robotic zipper

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2419487A (en) * 1944-02-02 1947-04-22 Kenyon Instr Co Inc Remote-control metering system
US2487026A (en) * 1944-11-24 1949-11-01 Dayton Acme Co One-way wedging clutch
US2485792A (en) * 1947-01-14 1949-10-25 Jaeger Machine Co Gear and rack type control
US2548603A (en) * 1947-11-28 1951-04-10 Gen Electric Zero backlash gear drive
US3141647A (en) * 1960-08-18 1964-07-21 Hugh L Perazone Valve with remote control actuator
US3400593A (en) * 1966-03-28 1968-09-10 Power Components Inc Parts lifting equipment for die press
US4646868A (en) * 1983-03-22 1987-03-03 Bendiberica S.A. Power assisted steering system with rack and pinion particularly of the type with central output
US5540111A (en) * 1992-08-03 1996-07-30 Franklin E. Barnett Drive apparatus and method
US7222374B2 (en) * 2004-05-26 2007-05-29 Bell Sports, Inc. Head gear fitting system
US20070157372A1 (en) * 2004-05-26 2007-07-12 Bell Sports, Inc. Head Gear Fitting System
US20050262619A1 (en) * 2004-05-26 2005-12-01 Musal Michael J Head gear fitting system
US20050283885A1 (en) * 2004-06-29 2005-12-29 Stroud David E Helmet reinforcement system
US8020219B2 (en) 2005-07-01 2011-09-20 Bell Sports, Inc. Strap anchor system and method
US20070044210A1 (en) * 2005-08-31 2007-03-01 Bell Sports, Inc. Integrated fit and retention system
US9756893B2 (en) 2005-08-31 2017-09-12 Bell Sports, Inc. Integrated fit and retention system
US20100050324A1 (en) * 2008-09-02 2010-03-04 Bell Sports, Inc. Height-Adjustable Fit System
US9622550B2 (en) 2013-09-22 2017-04-18 Massachusetts Institute Of Technology Methods and apparatus for robotic zipper

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